减速特效，死亡特效调整

chenxin

2020-11-18 da0dc971d0178a281d132e8f84853b46bad26099

 Assets/Scripts/TowerDefense/Towers/Projectiles/HitscanAttack.cs

@@ -108,7 +108,7 @@
            switch (id)
            {
                case 2:  // 减速.
                    enemy.addSpeedSlowRate(0.25f);
                    enemy.addSpeedSlowRate(0.15f);
                    enemy.SetTargetableMatColor(Color.blue);
                    break;
                case 3:  // 中毒